Home / 7,021.06-9,688.58-3,877

Finding the Fourth Proportional to 7,021.06, 9,688.58 and 3,877

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Solution

The fourth proportional to 7,021.06, 9,688.58 and 3,877 is: 5,349.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.06 : 9,688.58 = 3,877 : x
  2. Step 2: Convert to fraction form
    7,021.06/9,688.58 = 3,877/x
  3. Step 3: Cross multiply
    7,021.06x = 9,688.58 × 3,877
  4. Step 4: Simplify right side
    7,021.06x = 37,562,605.28
  5. Step 5: Solve for x
    x = 37,562,605.28/7,021.06
  6. Step 6: Final answer
    x = 5,349.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.